Temperature sensor circuit

Details Temperature sensor circuit Temperature sensor circuit

2008-05-06

2008-05-06

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Temperature

C327S538000

Reexamination Certificate

active

10965125

ABSTRACT:
To provide a temperature sensor circuit capable of obtaining a highly precise output voltage as a desired output voltage. The temperature sensor circuit includes: at least a constant current source; and a base-to-emitter voltage multiplication circuit constructed by a bipolar transistor and resistors, in which a base current error compensation circuit is provided so as to eliminate an error of the base current of the bipolar transistor caused to flow through the resistor. Further, the temperature sensor circuit of the present invention has such a structure that a resistance value of the resistor that determines an output voltage may be controlled.

REFERENCES:
patent: 4652144 (1987-03-01), Gunther et al.
patent: 4749889 (1988-06-01), Lagoni et al.
patent: 5589792 (1996-12-01), Brokaw
patent: 5691657 (1997-11-01), Hirano et al.
patent: 5923208 (1999-07-01), Tasdighi et al.
patent: 6128172 (2000-10-01), Feldtkeller
patent: 6956428 (2005-10-01), Voo

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